help request: sometimes the headers recorded in ctx are not what I am currently requesting

[amZhan]

Description

I wrote an authentication plug-in myself to obtain some business interface permissions by taking header information, but sometimes the headers recorded in ctx are not what I am currently requesting, and it feels like the header information requested by others last time.

Environment

• APISIX version (run apisix version):2.9
• Operating system (run uname -a):centos7.9
• OpenResty / Nginx version (run openresty -V or nginx -V):1.19.9.1
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):3.5
• APISIX Dashboard version, if relevant:
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):

[tzssangglass]

You should give the code directly and give the verification method.